Single Tests For Loopback Mode; Single Test For Far End Source Mode - Fluke DSP-FTA420 User Manual

Single Tests for Loopback Mode

Use these tests to troubleshoot fiber links, test patch cords, and check spools of
fiber before installation.
•
Total Loss: Measures the optical power loss between the output and
input ports of the DSP-FTA4XX unit. If two fibers are connected end-to-
end with a loopback cable, the total loss of both fibers is displayed.
•
Total Length: Measures the total length of the fiber between the
output and input ports of the DSP-FTA4XX unit. If two fibers are
connected end-to-end with a loopback cable, the total length of all fibers is
displayed.
•
Propagation Delay: Measures the total propagation delay of the
of the fiber between the output and input ports of the DSP-FTA4XX unit.
•
Power: Measures the optical power received at the input port on the
main unit. Power is measured at 850 nm and 1300 nm.
•
Send (850 nm, 1300 nm, 1310 nm, 1550 nm,
VCSEL 850 nm, or FP 1300 nm): The possible wavelengths
displayed depend on the type of Fiber Test Adapter installed. The FTA-
420 allows 850 nm or 1300 nm (multimode). The FTA-430 allows 1310
nm or 1550 nm singlemode. The FTA-440 allows VCSEL 850 nm or FP
1300 nm laser. The main unit continuously transmits light of the selected
wavelength from its output port.

Single Test for Far End Source Mode

The Receive test, which requires a separate multimode or singlemode
source at the far end, continuously measures optical power at the main unit.
With a multimode selected, you can measure power at 850 nm, 1300 nm,
VCSEL 850 nm, or FP 1300 nm laser. With a singlemode selected, you can
measure power at 1310 nm, 1550 or 1625 nm.
Fiber Test Adapter
Single Tests
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